Prognostic implications of myocardial contractile reserve in patients with coronary artery disease and left ventricular dysfunction
Farooq A. Chaudhry, MD, FACCa,
Jason T. Tauke, MD, FACCa,
Renato S. Alessandrini, MDa,
Gil Vardi, MDa,
Michele A. Parker, RN, MSa and
Robert O. Bonow, MD, FACCa
a Division of Cardiology and the Feinberg Cardiovascular Research Institute, Northwestern University Medical School, Chicago, Illinois, USA
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Figure 1 Survival in 52 patients treated medically. Patients are subdivided into 34 patients with substantial myocardial viability in dysfunctional segments, defined as contractile reserve during dobutamine echocardiography in  5 myocardial segments, and 18 patients with evidence of minimal or no contractile reserve.
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Figure 2 Survival in 58 patients with contractile reserve in 5 myocardial segments with systolic dysfunction under basal conditions. Patients are subdivided into 24 patients treated with myocardial revascularization and 34 patients treated medically.
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Figure 3 Survival in 22 patients with contractile reserve in <5 dysfunctional myocardial segments. Patients are subdivided into 4 patients treated with myocardial revascularization and 18 patients treated medically.
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